WASHINGTON -- The Republican National Convention in Tampa, where former Massachusetts Gov. Mitt Romney accepted the presidential nomination of the Republican Party, was funded by a collection of corporations and mega-donors instrumental in funding super PACs and "dark money" non-profits to help put Romney in the White House.

The convention committee raised a total of $55 million for the four-day long proceedings, according to a report filed on Wednesday. Corporations accounted for the majority of that with $32.6 million in direct contributions. Wealthy individuals, including some of most well-known super PAC and "dark money" non-profit donors, contributed $13 million. In-kind contributions by corporations accounted for the other $10 million.

The top corporate donor was Marketing Solution Publications, a Florida-based business run by financier William Edwards, with $4 million in contributions. Of the more than $3 million given by AT&T half came from direct contributions. The American Petroleum Institute, the top lobby shop for the oil and gas industry, gave more than $2 million. Half of Microsoft's $1.5 million came from direct contributions. Bank of America and Florida Power & Light each donated $1 million in direct contributions.

The single biggest donor to the convention was not, however, a corporation. It was instead the single biggest known donor to outside efforts to elect Romney president, Las Vegas casino billionaire Sheldon Adelson, who has reportedly contributed at least $71 million to super PACs and non-profits that do not disclose their donors. Adelson, the twelfth richest man in America, chipped in $5 million to the convention committee that organized and planned the four-day proceedings.

The casino magnate was joined by other Republican mega-donors with David Koch, the founder of conservative activist group Americans for Prosperity, giving $1 million. A collection of million-dollar donors to Romney's supportive super PAC, Restore Our Future, chipped in $1 million too. These included hedge fund investors John Paulson, Robert Mercer and Paul Singer, New Balance shoes founder James Davis and Univision founder Jerry Perenchio.

Below: See the full list of direct corporate donations to the host committee of the 2012 Republican National Convention in Tampa.

Sheldon Adelson, the Las Vegas casino magnate, and his family have combined to give $53.69 million to super PACs in the 2012 election cycle. At first, Adelson pumped money into Winning Our Future, the super PAC supporting Newt Gingrich, but now he is funding groups backing Mitt Romney and congressional Republicans. Adelson is ranked on the <em>Forbes</em> list of the richest Americans at number eight, with $21.5 billion in net worth.
Sheldon Adelson and his wife, Miriam, gave $15 million to Winning Our Future. His daughters Sivan Ochshorn and Shelley Maye Adelson each chipped in $500,000. Another daughter and her husband each gave $250,000.
Adelson and his wife have also given $20 million to Restore Our Future (supporting Romney), $5 million to Congressional Leadership Fund, $5 million to YG Action Fund, $2 million to Freedom PAC (supporting Connie Mack), $1.5 million to Independence Virginia PAC (supporting George Allen), $1 million to Ending Spending Action Fund, $1 million to Treasure Coast Jobs Coalition, $1 million to Patriot Prosperity PAC (supporting Shmuley Boteach for Congress) and $250,000 to Conservative Renewal PAC, $250,000 to Texas Conservatives Fund (both supporting David Dewhurst) and $190,000 to Hispanic Leadership Fund.
Adelson remained in the number one spot among super PAC donors after counting contributions for August. He has allegedly <a href="https://www.huffpost.com/entry/sheldon-adelson-to-lavish_n_1600149">given in excess of $70 million</a> when contributions to non-profit groups like Americans for Prosperity and the Republican Jewish Coalition are included.
His involvement in politics revolves around his support for the state of Israel, <a href="https://www.huffpost.com/entry/sheldon-adelson-newt-gingrich-israel_n_1195867" target="_hplink">in particular the policies of Prime Minister Benjamin Netanyahu</a>. His business, along with that of other super PAC donors, <a href="https://www.huffpost.com/entry/sheldon-adelson-bribery-super-pac-donors-fcpa_n_1602694" target="_hplink">is also under investigation</a> for violations of the Foreign Corrupt Practices Act.